In unconsolidated or fractured ground conditions, the self drilling bolt system has become an irreplaceable product. Self drilling bolt system is possible in a wide range of materials including: clays sandy soils, weathered rock, tall slop…

As a new supporting method, rock bolting system adopts various processing technologies, materials and sizes to suit for many different geological conditions. Rock bolting system is a new structure and advanced technology. It has reliable a…

As one of technologies in project construction, the core function of self drilling bolt system supporting technology is to reinforce the wall of underground project and keep structure stable and security by using the anchorage force of soi…

Self drilling hollow bar is used to attach objects or structures to concrete. There are many types of this kind of hollow bars, consisting of designs that are mostly proprietary to the manufacturing companies. All consist of a threaded end…

The technology of self drilling hollow bar that has been regularly applied in excavation or backfill with the widely carried out of geological engineering and infrastructures. The measurement of application of self drilling hollow bar is a…

Drilling rock anchor bolts have played a crucial role in high slope of hydroelectric station. They have obvious features, such as single anchor bolt has big tensile pulling force, great depth and small project amount, it is suitable for di…